442 A. E. Verrill — North American CephalopocU. 



in fig. 1 of PI. XL, with the following additions : 1, 2, 3, 4, first, second, third 

 and fourth pairs of sessile arms : t a, tentacular arms ; d', external orifice of si- 

 phon ; V, v', ovary, mostlj' concealed by the oviduct; v o, commencement of 

 glandular portion of oviduct ; x', large gland surrounding the oviduct ; o d', ante- 

 rior portion of oviduct; o^;, orifice of oviduct; xx, pair of large, ventral, lami- 

 nated, nidamental glands ; x, pair of folUculated and mottled accessory nida- 

 mental glands; u, one of the urethral openings of the peritoneal membrane. 

 Figure 2. — Loligo Fealei. Embryo taken from the egg, ventral view, much enlarged ; 

 a, a, a, ventral arms, tentacular arms, and third pairs of sessile arms; c, c, eyes 

 on stout peduncles or lobes from the sides of the head ; m, mantle-edge ; h, 

 branchial auricles ; y, unabsorbed yolk-mass. 

 Figure 3. — The same. An embryo, within the egg, somewhat more advanced than 

 fig. 2, side view, less enlarged. The lettering is as in fig. 2, with the following 

 additions: a', second pair of arms; a", third pair; a'", tentacular arms; a'"'', 

 ventral arms ; s, orifice of siphon ; o, otolith ; /, rudiraentaiy caudal fins. Chro- 

 matophores are developed on the mantle. 

 Figure 4. — The same. An embryo at the period of hatching. Ventral view, en- 

 larged about 25 diameters. The yolk-snc is nearly absorbed. 

 Figure 5. — The same. A somewhat older larva, taken swimming at the surface. Dor- 

 sal view, enlarged about 7 diameters. The dorsal arms are still very small ; the 

 tentacular arms are the large-t; the chromatophores are large and symmetrically 

 arranged, but only part of them are figured ; the caudal fins do not reach the 

 posterior end. 

 Figures 2 and 3 are from camera-lucida drawings of living specimens by the author ; 

 4 is by J. H. Blake from life ; 1 and 5 are by J. H. Emerton, from alcoholic speci- 

 mens. 



Plates XLII, XLIII, and XLIV. 



These relate to the next article, which see. 



Plate XLV". 



Figure 1. — Lestoteuthis Fabricii Verrill. Young. Pen, enlarged two diameters- 

 Copied from G. 0. Sars. 



Figure la. — The same. Part of odoatophore. Copied from G. 0. Sars. 



Figure \h. — The same. Portion of tentacular club, front view, enlarged. Copied 

 from G. 0. Sars. 



Figure 2. — The same. Young. General figure, dorsal view, enlarged two diameters. 

 From an American example. 



Figures 2a, 26. — The same. Front and side views of one of the suckers from the outer 

 rows of a lateral arm of the same specimen. 



Figures 2c, 2c?. — The same. Front and side views of a hook-sucker from the median 

 rows of the same arm. 



Figure 3. — Loligo Pealei. Young female. Dorsal view of a specimen taken at New- 

 port, R. I , in August. Enlarged two diameters. From a fresh specimen. 



Figure 4. — The same. Young, just hatched. Ventral view, seen as a transparent object 

 from a specimen raised from the eggs, at Newport, R. I., August 5th. Much en- 

 larged ; a", a'", a"", three of the pairs of arms, showing the suckers on a'", the 

 tentacular arms ; o!, the beak ; Z, odontophore ; e, the eye ; /, caudal fin ; ^, 

 gill ; ^, ventricle of the heart ; //, //, branchial auricles : i. ink-bag ; m, man- 

 tle; 0, otoliths; s, siphon; s', base of siphon; t, end of intestine; «, stomach; 

 y, portion of yolk-sac, not yet absorbed. 



